Paper transfer system in a printer

Details Paper transfer system in a printer Paper transfer system in a printer

1980-05-09

1982-05-04

Christian, Leonard D.

Advancing material of indeterminate length

By intermittent material-mover

Comprising reciprocating or oscillating material-mover

226166, B65H 1736

Patent

active

043278566

ABSTRACT:
A small printer is provided which comprises a housing, a rolled printing paper mounted in the housing, a platen along which a paper runs, a motor, and a carriage having a printing head for mosaic printing on a paper on the platen. The carriage travels along the whole width of the paper and is driven by the motor, and a paper transfer mechanism transfers the paper by one line for every traverse of the carriage. The paper transfer mechanism comprises an idler positioned beneath the path of the paper, the idler being swingable in the moving direction of the paper, and the idler having a first projection parallel to the path of the carriage at the left half of the idler and a second projection inclined to the path of the carriage at the right half thereof. The projections are engaged with the corresponding slots provided at the bottom of the carriage to ensure the swing movement of the idler is synchronized with the movement of the carriage. The idler has a substantially V-shaped friction member providing a large frictional force to the paper in the normal moving direction of the paper and a small frictional force to the paper in the opposite moving direction of the paper.

REFERENCES:
patent: 3825162 (1974-07-01), Hubbard
patent: 4091980 (1978-05-01), Gerber
patent: 4119254 (1978-10-01), Lorenz
patent: 4131224 (1978-12-01), Gerber et al.

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